AVPlayer 在 iOS7 中不显示视频,在 iOS8 和 iOS9 上工作正常
AVPlayer not showing video in iOS7, working fine on iOS8 and iOS9
这是我的代码,
@interface ViewController ()
{
AVPlayer *avPlayer;
}
@end
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
UIView *containerView = [[UIView alloc] initWithFrame:self.view.frame];
NSString *filepath = [[NSBundle mainBundle] pathForResource:@"TestVideo" ofType:@"mp4"];
AVAsset *asset = [AVAsset assetWithURL:[NSURL fileURLWithPath:filepath]];
AVPlayerItem *playerItem = [[AVPlayerItem alloc] initWithAsset:asset];
avPlayer = [AVPlayer playerWithPlayerItem:playerItem];
AVPlayerLayer *avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:avPlayer];
avPlayerLayer.frame = self.view.frame;
[containerView.layer addSublayer:avPlayerLayer];
[self.view addSubview:containerView];
[avPlayer play];
}
这真的不应该在任何 iOS 版本上工作,因为
AVPlayer *avPlayer = [AVPlayer playerWithPlayerItem:playerItem];
超出范围并在 viewDidAppear
结束时被释放。
您应该将 AVPlayer
分配给一个 class 成员变量,以阻止这种情况发生。
否则可能是视频文件有问题
您的 AVPlayer 项目需要一个强引用,因为它会自动设置为 nil
请更改
@interface ViewController ()
{
AVPlayer *avPlayer;
}
@end
到这个
@interface ViewController ()
@property (strong, nonatomic) AVPlayer *avPlayer;
@end
并将所有 avPlayer
引用更改为 self.avPlayer
希望对您有所帮助。
这是我的代码,
@interface ViewController ()
{
AVPlayer *avPlayer;
}
@end
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
UIView *containerView = [[UIView alloc] initWithFrame:self.view.frame];
NSString *filepath = [[NSBundle mainBundle] pathForResource:@"TestVideo" ofType:@"mp4"];
AVAsset *asset = [AVAsset assetWithURL:[NSURL fileURLWithPath:filepath]];
AVPlayerItem *playerItem = [[AVPlayerItem alloc] initWithAsset:asset];
avPlayer = [AVPlayer playerWithPlayerItem:playerItem];
AVPlayerLayer *avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:avPlayer];
avPlayerLayer.frame = self.view.frame;
[containerView.layer addSublayer:avPlayerLayer];
[self.view addSubview:containerView];
[avPlayer play];
}
这真的不应该在任何 iOS 版本上工作,因为
AVPlayer *avPlayer = [AVPlayer playerWithPlayerItem:playerItem];
超出范围并在 viewDidAppear
结束时被释放。
您应该将 AVPlayer
分配给一个 class 成员变量,以阻止这种情况发生。
否则可能是视频文件有问题
您的 AVPlayer 项目需要一个强引用,因为它会自动设置为 nil
请更改
@interface ViewController ()
{
AVPlayer *avPlayer;
}
@end
到这个
@interface ViewController ()
@property (strong, nonatomic) AVPlayer *avPlayer;
@end
并将所有 avPlayer
引用更改为 self.avPlayer
希望对您有所帮助。